Hardware suggestions for next version of products



  • Audio amplifier auto off

    I suggest to hardware implement auto-disabling of the audio amplifier when not playing any audio.
    Some power savings could be achieved and the device would be prevented from producing unexpected noises.

    How:
    The audio amplifier chip has an "enable" pin.
    I think it would be a good idea to use a low pass filter fed from the audio output so it would disable the amplifier after the "dac" was set to 0 for long enough.
    This way, it would not be necessary to allocate one of the ESP32 outputs to control the amplifier chip.



  • good idea!


  • M5Stack

    yes, i will change the design. thank you!